Rhizobium,are those bacteria that have the ability to fix free nitrogen from the air and help in plant growth.These bacteria live in root nodules of the leguminous plant and absorb atmospheric nitrogen and convert it into soluble nitrates.These nitrates are used by plant to make protein.
Rhizobium cannot fix atmospheric nitrogen directly but with the help of root cell of plant of leguminous family bean, pigeon pea , they can fix nitrogen directly, this bacteria after entering into the root of these plant stimulate to form numerous root nodules .
Rhizobium bacteria is symbiotic and saprophytic.
Rhizobium convert atmospheric nitrogen into organic nitrogen in their protoplasm.
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In nature Biological Nitrogen Fixation take place through microorganism containing the enzyme nitrogenous which catalyse the conversion of atmospheric nitrogen into ammonia.
The ammonia is used by plant for synthesis for biological molecule such as amino acid ,protein and nucleic acid.
Azotobacter , Clostridium , Blue Green Algae also fix atmospheric nitrogen.
The process of biological nitrogen fixation was discovered by Martinus Beijerinck.
Rhizobium is a genus of Gram-negative soil bacteria that fix nitrogen. Rhizobium species form an endosymbiotic nitrogen-fixing association with roots of legumes and other flowering plants
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Rhizobium, are those bacteria that have the ability to fix free nitrogen from the air and help in plant growth.These bacteria live in root nodules of the leguminous plant and absorb atmospheric nitrogen and convert it into soluble nitrates.These nitrates are used by plant to make protein.
Rhizobium cannot fix atmospheric nitrogen directly but with the help of root cell of plant of leguminous family bean, pigeon pea , they can fix nitrogen directly, this bacteria after entering into the root of these plant stimulate to form numerous root nodules .
Rhizobium bacteria is symbiotic and saprophytic.
Rhizobium convert atmospheric nitrogen into organic nitrogen in their protoplasm.
More Information
Answer:
Rhizobium is a genus of Gram-negative soil bacteria that fix nitrogen. Rhizobium species form an endosymbiotic nitrogen-fixing association with roots of legumes and other flowering plants
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